Identify A in the following reaction: A + CH_ | vedclass

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(D) The reaction of a Grignard reagent $(CH_3MgBr)$ with a carbonyl compound followed by acid hydrolysis $(H_3O^{+})$ produces an alcohol.In the given

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Acetone

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(D) The reaction of a Grignard reagent $(CH_3MgBr)$ with a carbonyl compound followed by acid hydrolysis $(H_3O^{+})$ produces an alcohol.In the given reaction,the product is tert-butyl alcohol,which is $(CH_3)_3C-OH$.Since the Grignard reagent provides one methyl group $(CH_3)$,the carbonyl compound $A$ must provide the remaining three-carbon skeleton with a carbonyl group.Acetone $(CH_3COCH_3)$ reacts with $CH_3MgBr$ to form an intermediate complex,which upon hydrolysis yields tert-butyl alcohol.The reaction is: $CH_3COCH_3 + CH_3MgBr$ $\rightarrow (CH_3)_3C-OMgBr$ $\xrightarrow{H_3O^{+}} (CH_3)_3C-OH + Mg(OH)Br$.Therefore,$A$ is Acetone.

Identify $A$ in the following reaction: $A + CH_3MgBr$ $\xrightarrow{\text{ether}} \text{complex}$ $\xrightarrow{H_3O^{+}} (CH_3)_3C-OH$

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